Pull-chain switch.



C. J. KLEIN.

PULL CHAIN SWITCH.

APPUC'ATION FILED SEPTJB, m1

Patentad Dee. 4,1917.

' swans-slain:

C. .l. KLEIN. PULL CHAIN SWITCH.

APPLICATION FILED SEPT. 16. I9Il.'

Patented Dec. 4, 1917 2 SHEETS--SHEET Q- UNITED STATES. PA r NT OFFICE.

. Tb all itcon'ce'r'n:

Be it known n of. the United States, residing at :intl -l1sc'f1ilImprovements in lull Chain SW tcl es, .of i l chthe following is a full,clear, Iieiseyan' Xactdescription', reference beinglied-to "the"accompanying draw ngtlf rming. a p rt. of. this spe ifi at n- (inventionrelates to electric snap switches of the pull chain type. The broadfeatures of the present invention are cov- N o. 648',035-,.fi1ed' Sept.7, .1911. I I

One o fgthe objects of the present invention .isjto provi e s'imple,compact switchinech? n rism-wllich nnv be economically mani'ifactured;Another objectis to provide a switch -1neclmnis|n=* luiving c quick;break or quick make and break action. Another object is t() ;p1'o\"iile'a switchniechunism having certiiii' fe tufresybv. which it isparticularly 21th ed'to' he operntcilby a pull ccril or clan iotherobject is. to-proviiie means the tl'ective pull applied to the v 1 n'n'iuc'l'i' greater than the force"app]icdxtothe pullchuin. Anotherobject is tojn'ovii le :1. switch mechanism how 30 mhdjustelilctensiolulevicc whercbythe K M Qt ot-the lep' ling cord or clniin mayhe.icompenseterl" for; A. .t'urther object-is to provide ll chain switchderice'irdaptml in connection-with lump l-u l.

s, onii'ot the features being the proinsulating supp" ting'r base foriru-theicthrough .r objects will be accompanying drawings I illboiliinents of the hm orkcd out in pracmvef-ccicommercigil'nd- 'eiinvcntionjis not limited tov ever. 5 By virtue of certain are fonnt lin all of the i illustltaiteihsnid mech i- (l p 'irnurily :to beoperated chair 1 Said switch. mechz t) course be operated tton' leveresircd;

Specification of Letters Patent.

"in the county of Milwaukee isconsi-i-i, have invented new ercil m(fie-pendin application, Serial oiled description ,rotutable key. or

oiHAI mEs J. KLEIN, or MILWAUKEE, 'wIscoNsIN, ASSIGNOB To THECUTLER-neuritis l MFG. 00., 0F MILWAUKEE, WISCONSIN, A CORPORATION OFWISCONSIN.

gU'LL- HAIN SWITCH Patented DecQet, L917,

A ucgnom filed September 16.1911. Serial No. 649,754.

- The various forms of the invention illusmt I, CHARLES J. KLEIN, atrated all include the same broad features or elements set forth in my(o-pending zipplh cation referred to above. These mm elements are thefollowing. A rotatable hriiiging member adaptedv to open and close itcircuit across suitable terminals; e .l'tltllliitblii actuating menibertherefor; an operating member adapted to cooperate with the i of'sz idactuating member in such a. mean that when the actuating member and theoperating member are moved relatively to each other, an accelerated stepby step rote. tion is imparted to said actuating member.

In the (lruWings:-- I Figure l is an clevationof it ceiling switch withthe casing shown in; section.

V Fig. 2 is a, sectional elevationon the line sa e 01: Fig. 1.

Fig. 3 is an elevation similar to Fig. 1 but with the parts moved to a.point where the 'IOtttlittlllfi. contact member is :1 bout to snnp tooil position.

Fig. 4 is :1 section Fig. 2.

Fig. 5 is an elevation of another form of switch mechanism in which theactuating members are yielding but not resilient as in the first formdescribed.

qucnce of operation;

Fig. 7 is a sectional elevation on the line 77 of Fig.

Fig. 8 is a sectional "elevation of a pull cord lamp socket switch withthe casing shown in dotted outline.

Fig. 9 isa sectional elevation taken at right angles to Fig. 8. 4 Fig.10 it view of the parts inthe upper lmlf by the line l0-.l0 inQFig. 8.

of the insulating casing, [is iniliczitecl' ill? Fig. 11 's a Viewsimilcr to Fig. 10, but

with the "movable switch parts moved through a 1m rtialcyclc ofoperation. Fig.12 1s a view of the lower half of the insulating casing:ill; seen from above. Referringto i i-.5. 1-. the switch elements iremounted on .1 Qmituhle baseor support I of insulating material; whichmay be of any suitable configuration. and is illustrated as tHlllPtQtlto he secured to :1 ceiling or otheh horizontal support. The bag;supports the relatively fixed contact members 2 to which the leads aresecured in any suitablemanner. Each contact member 2 is preferablybifurcated whereby two resilient tongues or strips 3 and 4 are provided.The resilient strips 3 are ada ted to be bridged by the rotatable.circuit-c osing or bridging member 5. Theresilient strips- 1 constitutethe operating members, one of which is; provided with, a

shoulder or catch 6, preferably struck up therefrom. This resilientmember is thema i'n operatin'gv member, the other resilient strip 4being supplemental and desirable, though not essential. The rotation ofthe bridging member 5 is effected by the actuatmg member I whichconsists preferably of a block of polygonal outline. Inthe presentinstance it is'square, although he number of faces may be "varied. Saidblock 7 and bridging member 5 rotate togeiherand are mounted on ascrewfS carried by a reciprocating'pla'te 9. The bridging member armypreferably insulatedfrom the :metallic N I plate 9 and from the partsassociated "there- "with, 'biitthis' is 'ifo't es'seiit'isTIJ'iis 'Iofi'as" it isinsulated from the stationary ontact members when in openpositionl A metallic cover plate 10 is suitably secured to theinsulating base and supports and guides the movable parts heretoforedescribed. This hich extendsa screw .8.

space betweenthe cover platelO and the adjacejnt insulating base 1, asuitable recess or slot ha'ving been provided for this purpose, Thebridging member 5 and the actuating block 7 are accordingly reciprocatedon the rgos aisiae; or clea Plate 1. he slildm ma 9 and consequently theparts -carr ie -t -ereby, are normally main- !111911 in pp rmostEQSi-tiQu-as'. sl-mvvvxei inv F1g.- 1, by'means of t e spring suitablynamed and havingcm end-hi? "ed under e-j proje 'tion .orca ch13 on itdtliep 14,""oi* suite-lie equigalent ti exible is provided." Thcha'lir'has one ef' caught in] "the the i uiljedTby. hand, a is apparentthat the pulley 16', theshaft or screw 8 on is mounted, and all the arts:car- Pby -Said screw, willv descend. hen the i il'y'fi's :relea sjed,are 12'willrestore" the art toupperppsitioni. The chai=n1 be-- .e'mentof said-pulley. will b one.-

w v In i f h i Y *errdof the hajifrn hencelithe. downward force a liedagainst thetensi n cf the spring. 2. w be-ucuble the'downward gullapplied to er the end-of the chain, 1 here are two ,bri'dgin member 5,whereby plate, is pfovided-"with a' slot 11 through' The .p life 9. isadapted to slide up and down in he f-ree 1e. liminated, 1

thefdrkflfi; refieraby cut out of thjccover an i I 31% s have. e bundthepulle 1e, jrotatabl' ed'on-Qt-he serew, 8. hen

- the ropes:

downward movement of the "free important advantages in this arrangement;One is that a comparatively light'pull will operate the switch mechanismagainst the ac o O t a ively ng. pring? 2 which may be employed wherethe 'ull chain is long and rather heavy and w ere consequently theweight of the chain has to be supported by said spring] The secondadvantage is that in a compact switch mechanism such as this, Where theactualimovement required is not great, it is adva'ntajcons toiiermit'the end oi the ehain to move,

arther t an the reqhixfeddijst main; re; sponse to a careless erk-o r'pullof unnecessary violence byfcare peraftors, accus= I a, .4; P93..,theblock is about on t e cl the-contact strips 3 are/stillbri mainscosed. As the, block 'r the dead ce'nter, the-resilient actu st snaptoward each other and block ahead thereby opening the a. quick snapaction. As" seen-.1 v M is released, the'parts are restore to normal IPip P on ep eth h circuit-is now open nstead of closed; Thenextdown wardpull of-the chain cans he bri member to snap to closed position, .thesii (isle of operation bein -perforated as in casefirstdescribed. As theactuating membersfi h r m un t th y 'm iw c y firme integ for econ;a1.th,. ug in the actuating bloc membc ormembrs-is Earent that-therelative am .e reverv d i tizlfii lfi a may slide. ale the/ fixed orboth eleinent Fart ermqrq its elements "jd'escrib" ous -war s ot-heample 1,a49,11'r i 3 uses. In the construction illustrated, the

. switch being adapted more particularly for a ceiling switch, the partsare inclosed in a rotectin or ornamental casing 17, secured y suitab einsulating bushings and nuts 18 and 19, and which are supported byabracket 20 in such a manner that the Casing may be readily removed forinspection whenever desired, by simply unscrewing the lower nut.

In, the form of switch mechanism illus trated in Figs. 5, 6 and 7, therotation of the. actuating block and bridging member is accomplished bysubstantially the same means described above. The operating members 21,however, althou h yielding, are not resilient. They are pre erablypivoted at a common point 22 andimpelled toward each other by a spring23. As the actuating block moves up and down, one corner is caught by"the projection 24, the pivoted,

menters;21...beiss s read. emitted. r Pr pin together again to impart aquick throw to t e bridging contact. The detailed operation of thedevice will be apparent from ters being the same as those applied to thefirst form of switch described, where the parts are substantiallyidentical and perform the same functions. It is to be noted that in thisconstruction the spring 23 performs the double function of returning,the

arts to their initial position and maintaining the operating members 21in engagement' with the actuating block.

In Figs. 8, 9, 10 and 11, Ihave illustrated a lamp socket switch adaptedto .be oper ated by a pull cord or chain.

Tbe'switch elements are supported by an inclosing insulatingblock ormember made in two separable arts 25 and 26. part is provided with areduced neck or extension, the two extensions whencombinedforminganinsulating bushing 27] which projects through a suitable opening in themetallic casing 28 which, together ,with the cap 29, ,(irdinarilyincloses lamp sockets of standard size.

however. h V v The usual screw-threaded shell 30 and c'eutercontact3l'are mounted onthe insulatingbase to furnish the usual lamp contacts.The conductors or terminals are brought down through any suitable slot,opening or groove in the insulating body 25 ziniljare secured to theterminal screws 32' and 33, the terminal screw 32 being carried by thelower, and the/terminal screw 33 lacing rarried'by the upper half of theinsubiting base. The circuit extends from the terminal. screw 32,through the strip 34: to 1 the threadedshcll 30, held in place by thecurved strip of metal 35, secured by suitable screws 36 in additiou tothe strip 34. The. circuit is traced from the incandescent lamp,

"between these members.

cai'riedby the sliding plate 9.

Each

The bushing may be omitted will bev snappedaround to successively openand close the circuit in the manner previously described. The chain 14is guided in its movements by the insulatingbushing 27 which, beingformedintegrally *with the insulating supports25 and 26, is

perfectly rigid therewith and exerts no di- 35 rectpressure on theexternal casing 28 such as would tend to -cause a looseness or playFurthermore, this bushing being split or made in two separable halves,provides a ready means for arranging the chain 14 properly therein.

The spring 12 which holds the movable ts of the switch normally inextreme po- 1,, is coiled about a projecting pint)?" The opposite endsof said spring arerelatively fixed, one end being: adapted to be droppedinto any one of a number of notches pro-yid'edin a suitable plate orsupport 38,for the pun pose of adjusting the-tension of.-'the spring. Asseenparticularly in Figs. 10 and 11, this. plate is arranged near theperiphery of the insulating block 25, .so that the free endof the springmay be readilygifaspe'd bythe hand when lthe'incl'osing casing. isremoved for the purpose ,of-ujgl'justing the springtension.()neadvantage of having thefspring readily ad;|'ustable' is thattheweight of the dependingchain ltmay be compelibfuted fork,"

by putting the spring under additional; ten- .1 0 Y sion. Thearrangement by whiclrthe'po 1r: applied to 'thefree end of the ,chain .1

cured t6 the upper 'insulating'block 251a d' 1 l is therefore removablewith saidblocltwheu the same isseparated from the lower bloclr '26. Themain supporting plate 39for the'12di;

movable parts of the switch is prefcrably'se; I cured to theinsuflatingblock 25 by lugs '40,

which pass through suitable apertures in? said block axulnhavetheir endsbent over to n 1 grip said block. The plate 39 is provided 2 alsowith'additionalliigs 41 struck lip-there, L

from, which position said plate from the i i if insulatingblock 25 andact as guides for the reciprocating plate 9.

From the abovedescription it will be ap 13 i' :the fabpv'e {statementsshall be interpreted-- h:g"me lfely'.us'descriptive and not in alimiting u.sez1 se."= -The.- invention is intended to cover li'sliinglthe defiirecl results and falling itliin" hescope of the appendedclaims;

, iIicluimns neivand desire to secure by Lett'ei Patent of the UnitedStates is:

-1. an electric switch, in combination, a a lietu ating memberrectilinear-1y mow leiundfiotixtablo in a siugloplane, a pullctilinearly but independently of h rate-braid rectilinear movement.

iin eloet-ric su'iteh, in combination, a nt -ct: {actuating membermovable bodily Q and'irotatebly in a single plane, a pull cord :I IO,lcd 'a'bout said memberto move lhe Same. lilbio ilyetj a reduced speedand meanr for ofl'e titin gnn automatic snap rotation of aaidnielriberiwhen moved bodily at any speed.

.3. n an electric switch, in cmnbination. a Mutable and bodily m vableactuating 'l i e-yielding catch for turning said :it moves, a lixedsecuring mempull eordadjnstahly anchored at ithin Said latter member andhavle'xed portion'to-act upon said member for moving the same rm:-rly.-. v

In 'a'nieleetric' switch, a rotatable and 'vable actuating member, {andit having. a. refiexed portion for lf iiionwithsaid membern'lierebytheily 'iiiovementj of said member is caused relatively .less than themovement of said cord a.n eleetric switch, in e nbinution, a otable fundbodily movab e actuating embeqja yieldingmeniber ha ving a shoulrningsaid actuating member as it relatively fixed eatcli and a. pull tedtohave dii'lerent portions thereve length of said cord and'havingportion to act upon said actuating 1' moving'the same at a relativelystall mary contacts, a rotatable bri'dg:

inbotherefor, a sliding-support for b dg ing member, an actuating blockoped over said pulley having one and the other end free, whereby:otli'ensuitable equivalent means for ae'com-- I 'fixedfnt one end andhaving a refluxed o net upon-said member for moving- 'ectilinear l v,and means for ell'ect-. I l acoelerated rotationofsaid member when '0:tin ored therewithin forrdetermininglectrie aiviteh, substantially-prir:

u'lley also eari i'edby said support,

and assoizia'ted parts may he moved by seid ehain, and yieldable munsfor engaging said block during its movement to i e it with a snapmovement.

7. In an-eieetne switch, asupporting plate having uidim lugs thereon, asliding plate guide y said lugs, a post carried by said Slltllll plate,a. rotatable contact member.

actuating block and pulley mountedon said post, a-spring tending to holdsaid sliding, plate am the parts carried thereby in normal position, apull chain loopedoveiflsaid pulleyand having one end secured to saidsupporting plate and the other end free to be pulled to m ve saidslidingplate aud-ussoviatod parts from normal position against theaction-0| said spring, stationary contarts adapted to be bridged by Saidi ot afablo contactmember to close a circuit, and a yielding obstructionadapted to engage a earner of said block during said movement,

,whereby said block nd valid rotatable e0n-' tart member may ,be snappedto suoessively angularpositions.

s. In an eleetrle Std/Heb. in combination, a bodily movable opmtldmember, a pull l'lll'd operating member therefor and an operativeconnection between said members whereby a given movement of the latterimparts a lesser movement in the former.

U. In an electric switch, in combination, a movable a. n ber; a pullcord for moving said nuuuiaa' from normal position, :1 cm spring forretracting said member. to normal pusitlmi, and a lixe'd member havinga: plurality of receses in anyone of which an end of said spring maylio'aueh'ored for varying the tension thereof.

10. .In a lamp socket switeh, in eamblna Lion, an n'isulating sup)orlfor ihe switch meeluinism, a (ILSIIW' bushing projecting an-ough anopening in said casing, said-bushing being iuteflral with saidinsulating support and adapled toguide a pull cord for the switchmechanism.

11. In a lamp socket switch, an insulating base having a recess in theSide thereof, a spring suitably mounted to maintain the movable switchelements in normal position, a plate having notches the-rein mounted insaid reoes, said spring beinga'd moving one end thereof into t e variousnotehes, said end projecting 'near the side of Said insulating basmwhere y said spring may be. readily adjustul.

Tit-witness whereof, I have hereunto snb-.

ustable byor said support, a

